Circuit-closing mechanism



F. W. STALKER, F. K. TAYLOR, AND L. B. SWIFT.

CIRCUIT CLOSING MECHANISM.

APPLICATIQN FILED FEB.28,1917.

Patented Nov. 14, 1922.

IIIII Wfl/111m IIIIIIIIIII IIIIIIIII .9

-IIIIIII IIIIIIIII Patented Nov. 14, 1922.

UNITED ASTAIES FREDERICK W. STALKER, FRED K. TAYLOR. AND LEWIS B. SWIFT,OF

YORK, ASSIGNORS TO TAYLOR INSTRUMENT COMPANIES. OF YORK, A CORPORATIONOF NEW YORK.

1,435,186 PATENT OFFICE.

ROCHESTER, NEW ROCHESTER, NEW' CIRCUIT-CLOSING vMECHANISLVI.

Application. filed February 28, 191?.

To all trimm t 'may concern.'

Be it known Vthat we, Fnnnnmcii lll. STAI.- Knn, Faun K. livLoII, andlmwis l. hwir'r, all of Rochester. in the county of Monroe and State otNew York. have invented certain new and useful improvements in Circuit-Closing Mechanism; and we do hereb) declare the tollowingT to bc a full.clear, and exact description of the same. reference being had to theaccompanying drawings, forming` a pai-tof this specification, and to thereference numerals marked thereon.

Our invention has'for its purpose to provide a mechanism forautomatically closing an electric circuit at'a predetermined instantduring the operation of an indicating or recording machine in order togive an alarm or effect some secondary operation, and it is particularlyapplicable to time controlled temperature instruments and the like. In amore particular aspect, the invention is intended to provide a simplemechanism that is readily adjustable to effect closing of an electriccircuit at any` selected and predetermined time and to con'iplete thecircuit closing operation withaut interfering with the continuousmovement of the part's'of the recording or indieating mechanism. Afurther object of the improvement is to eliminate chance of breakage orinjury to the contact or circuitA closing members. To these andiy otherends the invention consists in certain improvements and combinations ofparts, all as will be hereinafter more fully described, the novelfeatures being pointed out in the claims at the end of thespecification.

ln the drawings:

Figure l is a plan view. partl;I in diagram, showing the application ofthe invention to a temperature recorder;

Figure 2 is a vertical sectional view on the line @-23 of Figure l, and

i Figure 3 is a sectional view on the line fik-3 of Figure 2. n Similarreference characters in the several figures indicate the same parts.

`The invention may be carried out in various ways, and we haveillustrated it in the present en'ibodiment for illustrative purposesmerely, and without {in}7 intention ot limiting the scope of theimprovement to the particular mechanism disclosed, which consists of atemperature recorder compris- Serial No. 151,421.

ing a casing l and a iransiiiarent cover :2. A\rranlged within thccasing l is a chart holder fi upon which mav be mounted a suitable chartal. of paper or similar material to receive the markings of atemperature controlled marking arm or pcn which is operated bv athermostat, as usual in this class of, devices. The chart holder ."l ismounted upon a hub lixcdlv secured to the central arbor T, which isrotated bv a clock mechanism. indicated diagramaiaticallv at and whichfor the purpose of the present Invention it is unncccssar)v to .setforth in detail. ln the operation of this mechanism, the chart si isrotated at a constant speed and a continuous mark is placed thereon bythe pen 5 so that a complete temperature record is kept and at any timecan hc seen at a. glance upon the chart. which mav be of anv size withrelation to the speed ofthe d rivinigr or time mechanism so that acomplete I'ota tion will be effected once in every so many hours, and itis frequently desirable to control a seconda rvv mechanism automaticallvat a predetermined instant in the operation of the temperature recorder.'lhis sccondarv operationv may consist in opening or closing a Vvalve ordamper. or stopping the Inovementof the clock mechanism alrcadv referredto, or giving a signal or alarm, and in the structure illustrated wehave shown devices operating to c'lfect a bell alarm. lith this in view.there is provided a circuit (l connected to binding posts 7) and o. andincluding a battery B and bell li. From the binding post /1. a conductore leads to a circuit closer, which includes a tubular coiled spring 9.The lower end of the coil spring 9 is fixedlv mounted on a stationaryand insulated pin or support 1t), and atl the upper or free end isarranged a conducting member in the form of a pin ll which is located inthe path of a contact member on the chart. holder. Thus the conductingmember 'll is frecl)v vieldable in aniY direction but mirmallv. assumesan upright position to engage the contact member. which is presentlv tobe described, although the yieldability of the spring 9 is such as topermit.

the Contact member to move past the conducting member 1] by forcing thesame to one side as shown in dotted lines in Figure 3 and without.stopping or interfering with the movement of the chart holder.

The chart holder is provided with a con- 12 carries the arm or extension14 Whichis corrugated or bent inwardly at 15 to form a lug havingrictional engagement with the under side of the chart holder 3. rThe lug15 thus acts to retain the contact member in any adjusted position uponthe chart holder and to permit adjusting movement upon the applicationoi'slight pressure. The arm 14 is further provided With -a contactportion 16 which travelsin a path passing through the conducting member11 of the circuit closer already described. At its outer end the arm 14is bent upwardly and inwardly, affordingan indicator 17 overlying thetop of the chart holder and cooperating with time indicia upon the charton the holder so that the contact member can be easily adjusted tc anypoint on the chart holder and in such manner that the electric circuitwill be automatically closed and an alarm given at tWo hours, tourhours, or any other predetermined length of time after the adjustment ismade. The contact portion 16 forming part of the contact member on thechart holder is electrically connected through the parts of theVmechanism and the casing 1 to the ,binding post ZJ', so that when thecontact/portion 16 engages the conduct ing member 11, the circuit C isclosed and an alarm is iven. The operation ofthe alarmbeil or such otherelectrically con troiled -operation as may be desired iscontinued aslong as the contact portion 16 .and conducting member 11 are engaged,that is to say, until the chart holder has moved far enough to vcarrythe contact member beyond the circuit closer, and during the period ofengagement the circuit closer yields; and is `forced away from itsvertical position, which is permitted by the coiled spring 9, in/ orderto permit the continuous movement of the chart holder. In order toadjust the parts for a particular operation, the contact member on thechart holder is moved manually by engaging the indicator 17 or the outerend of the contact member,A turning it with reference to the chart untilthe indicator 17 coincides with the time indication on the chart atwhich the desired operation is to take place.

We claim as our invention:

1. In a circuit closing mechanism, the combina-tion vof a movable chartholder, an

ia-acuse arm extending radially ot the chart and ad' justablecircumferentially thea'eot. an indicator on said arm adapted tocooperate with a chart on said holder. a Contact portion on* the arm,adapted to be included in an electric circuit and a yieldalile circuitcloser mounted in the path ot' the contact portion.

2. The combination ot a eupjiort, a rotary chart holder thereon, amember onone of said parts provided with an electrical contact and withan indicator'v and supported for adjustment about thc axis ot saidholderv as a center to bring said indicator .into registry, selectively,with ditlerent points on the periphery oi said holder. and a second4electrical Contact on the other oi' said parts for cooperation withvsaid iirst contact.

3. In a recording instrument a rotary chart holder, a chart thereonhaving its periphery marked with indicia, a member provided with anelectrical Contact and with an indicator and supported for rot-ationwith said holder and for adjustment rela-tive thereto to bring saidindicator into registry, selectively, With the indicia on said chart,and a second electrical Contact disposed in the path of rotation of saidfirst contact.

45. 'In a circuit closing mechanism for recording instruments, thecombination of a support, a rotary chart holding disk there- I cuit andarranged for engagement with each other during the rotation of saiddisk.

5. In a' circuit closing mechanismv for re.- cording instruments, asupport, an arbor rotatably carried by the support, a chart holding diskon said arbor, an arm supported Jfor frictionally restrained adjustmentabout said arbor as a center and extending radially of said disk'on theside of the latter opposite said chart, indicating means on the outerend of said arm extending over the periphery of said disk adjacent a`chart on the latter, and relatively yieldable contacts on said arm andsupport adapted for inclusion in an electric circuit.

FREDERICK W. STALKER. FRED K. TAYLOR. LEWIS B'. SWIFT.

